

A111023


Integers n such that 9*10^n + 11 is a prime number.


0



1, 2, 3, 4, 6, 8, 16, 20, 27, 115, 180, 274, 576, 1111, 2404, 5127, 8082, 9514, 12808, 14752, 15926, 22670, 37432, 41988, 53707, 72595, 92742
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OFFSET

1,2


COMMENTS

See Kamada link  primecount.txt for terms, primesize.txt for discovery details including probable or proved primes  search on "90w11".


LINKS



EXAMPLE

n = 6 is a member because 9*10^6 + 11 = 9*1000000 + 11 = 9000011, which is prime.


MATHEMATICA

Do[If[PrimeQ[9*10^n+11], Print[n]], {n, 1, 1300}] (* Zak Seidov, Sep 14 2006 *)


CROSSREFS

Cf. A100275 = numbers n such that 9*10^n11 is prime.


KEYWORD

more,nonn


AUTHOR

Julien Peter Benney (jpbenney(AT)ftml.net), Oct 04 2005


EXTENSIONS



STATUS

approved



